SAN FRANCISCO (AP) — State officials have defended Gov. Jerry Brown's request to have regulators map and study his family's ranch for oil, gas and mining potential — arguing that the work by the state was nothing the agency wouldn't do for other members of the public. [...] The Associated Press found no records that show anyone else received the same level of service on private land — and one state lawmaker was even told that state officials couldn't help him map oil wells that were potentially endangering drinking water supplies in his Southern California district. The new records appear to show occasions when state oil regulators provided public entities and officials with existing maps, or passed along screen-saves from the state agency's websites. Brown's request and state oil officials' response first came to light in an ongoing lawsuit brought on behalf of southern California farmers who allege that Brown's administration worked with the oil industry to get around laws meant to prevent oilfield contamination of groundwater and air. Environmental and watchdog groups have condemned the state oil research done for Brown's ranch, with the Center for Biological Diversity saying last week that Brown used the state agency as "his own private oil prospecting team." Brown's spokesmen and state oil and gas officials said the work done for the Democratic governor was legal, because it was nothing that the agency wouldn't do for any member of the public.